CVE-2026-101303

The IPv6 UDP send path for unconnected sockets did not apply the jail policy of rewriting a loopback destination address to the jail's primary IPv6 address. A process in a classic non-VNET jail can send UDP datagrams to services listening on the host's IPv6 loopback address, bypassing jail networ...

CVE-2026-101303 IPv6 UDP sendto(2) bypasses jail loopback restriction

The IPv6 UDP send path for unconnected sockets did not apply the jail policy of rewriting a loopback destination address to the jail's primary IPv6 address. A process in a classic non-VNET jail can send UDP datagrams to services listening on the host's IPv6 loopback address, bypassing jail networ...